#include <iostream>
using namespace std;
 
int main(){
	int L, M, N;
	cin >> L >> M >> N;
	int money = L * 100 + M * 25 + N;
	money -= money / 1000 * 1000;
	int ans = money / 100;
	money -= money / 100 * 100;
	ans += money / 25;
	money -= money / 25 * 25;
	ans += money;
	cout << ans << endl;
}